99.36: What happens to the inertia of an object whe5pet3t7 hc. u:kfcg8 how1v.q n its velocity is doubled?

  02.14: An intrinsic property of matter is one that does not46tl +( qqndcd depend on the quantity of matter present. Which of the following properties is NOT an intrinsic (qlqd+ct64 dnproperty?

  04.16: A 20 kg boulder resth;bb tc)n7on(s on the surface of the Earth. Assume the Earth has macn(bn)bot ;h 7ss $5.98 \times 10^{24} \; kg$ and $g = 10\;m/s^{2}$ . What is the magnitude of the gravitational force that the boulder exerts on the Earth?

  09.12: A 5.0 kg sphere is in free fall near the surface of the Earth. 6zd 4g1d9bb ig(*. u lgiiqi otf.fjbc2,;,jyWhat is the magnitude of the gravitational force acting on the earth by the sphere? The Earth ,zl. u*i(it2d gcfb6,jq db.gig14 b iyj ;fo9mass is $5.98 \times 10^{24} \; kg$ .

  00.09: Is it possible foe.buz un1cyelb80;mx( irjpet ) 9.6 kr an object’s velocity to increase while its acceleration r9euub. pey l(8mkn)0jx.6i1 zeb tc;decreases?

  00.11: A certain particle undergoes erratic motion. Ah6 j1ybu6ll )zt every point in its motion, the direction of the particujyl16h6z) lb le’s momentum is ALWAYS

  17.14: A block is suspended in the air at q8qi xa6jh+u .the end of a string held by a person. The person pulls on the string uniformly accelerating the block upward for a short time. During this time, which one of the following choices correctly identifies the Newton’s Third Law pa6.juqh8a+q xi ir force to the force of the string on the block?

  07.18: In which one of the following situations is the net force constantly zer52bo q6jp-twrux;)k wo on the o2k6 uo 5w qxr-w)t;pbjbject?

  13.28: An object is in free fall close to the ground. A person intervuitgv 2k 9rf7 pk8p 8fsg10:yhenes and slows the object uniformly to rest. Which one of the following statements must be true about the magnitude of the acceleration of the object as it is being stopped by the person? The magnitude of the object’s acceleration is a and the magnitude of the accel :p8i0rkysfgkpt g9 8u12f h7veration from gravity is g.

  98.03: An object in equilibrium has three forces, F1 of 30 N, F2 of 50 N, q zslb3i/z : zhb( oror0x+.q0and F3 of 70 N, actingz3/qiohzo+ rxq l(:b b .0zsr0 on it. The magnitude of the resultant ofF1 and F2 is

  01.07: A force of 6 Newtons and a force of 10 newton)zv/v9a y7 t9ar.p xpagpm9;hs can be combine to form a resultant with a mag); p 9atmhxpa79zpv9. gr/a vynitude of which of the following

  10.06: Which of the foll5)jt n4 upyr5aowing statements is most closely associated with Newton’s Third Law of Motio55ay4 tr n)jpun?

  95.06: The reaction force does not cancel the action force becauu. wy lqy23(.fby-2oojws s,q se:

  14.14: A box rests on the floor of an elevae zs5a:eyr)5*wk ;o kttor. The elevator is accelerating upward. Which one of the following choices best represents the Newton’s Third Law pair force to the gravitational force acting on the b5y ;zwo: asert5) k*ekox by the Earth?

  15.15: A skydiver falls downward through the air with constant speed.g4 9ota/oq1tt p +mm9k Which one of th +q mttkt9o4mop/a 9g1e following choices correctly describes the Newton’s Third Law pair force to the air resistance acting on the skydiver during the fall?

  06.08: A baseball is thrown by a pitcher with a speed cm 7 ,s 7mlqy,-dg/tkvof 35 m/s. The batterswings and hi,7dq-gm, m/t7kcys lvts the ball. The magnitude of the force that the ball exerts on the bat is always

  11.13: A physics book sits at reylq4mr/*3 jhr st on a table. On top of the book is a calculator, also at rey3q4rrh l*mj /st. Which one of the following choices is the Newton’s Third Law pair force to the force that the table exerts on the book?

  05.06: The students in a Physics I class89s 8vklvrz.-*p wuruxe(,es (fksd7 were in lab conducting an experiment related to Newton's Sv88 r le fw(9v7 kzks(xrep*-uu.dss, econd Law. The collected data were displayed on the graph at the right. From this graph, what conclusions can the students make?

  99.03: If the net force on an object were doubled while at thez t qm:gcfhj89ii+ d9 3x0(ola same time the mass of the object was halved,then the accelemxzcqt dgj0ol 9i9h8ia+:( 3 fration of the object is

  96.15: A car whose mass is 1500 kg is accelerated u.0j xy7t 4dycw2 :elzmniformly from rest to a speed of 20 m/s in 10s. The magn4z :x . 0ylwm2cdyjt7eitude of the net force accelerating the car is:

  99.05: A tractor-trailer truck is traveling down the road. The mass k a6-lfo:l 242 o-hwzcpav 4vfof the trailer is 4 times the mass of the tractor. If the tractor accelera :h2-la4lwzkpf 2v6f aov4co-tes forward, the force that the trailer applies on the tractor is

  99.16: Which of the following principles best explainrhx joa5+urr/ ad8vqasjj8 bp)s,6 :+s why large tractor-trailer trucks8q jrr)8x:jrh+o us6dpa v,j+s/ 5a ba generally accelerate much more slowly that automobiles?

  99.19: A 50 kilogram skater at v qddmen.*(7/ hioa, :uk3ea lrest on a frictionless rink throws a 2 kilogram ball, giving the ball a velocity of 1 d*3ioanv:e.em/,ku (q 7dahl0.0 m/s. Which statement describes the subsequent motion?

  00.13: An object near the surff.o5x)m dkiro +;sq2j ace of the earth with a weight of 100 newtons is acx ksofdm+j5 2;i).r oqcelerated at $4\;m/s^{2}$ . What is the net force on the object?

  98.25: A car whose mass is 1200 kg is accelerated frkm6ql0einr 14);ltv c om rest by a constant force of 2400 N. What is the speed of the car 8.0 s after bm4ei60qlkt;)1 nlc r veginning?

  98.32: A 3.0-kg block with initial speed h9a-3zsw1 aexwx( g1 u4.0 m/s slides across a rough horizontal floor before coming to rest. The frictional force acting on the block is 3.0 N. How far does the block slide before coeuaaz 1wgs3x( x-w1h9ming to rest?

  95.38: A block with initial velocity 4.0 mi,sgt( o zz:/i9rh5 lq3d3 yhi/s slides 8.0 m across a rough horizontal f3 :(l/ i zghzh5,9yo3itds iqrloor before coming to rest. The coefficient of friction is:

  09.21: A 20.0 kg box remains at rest on a horizontal surface while a jyz+ fxw(ygva:1 o*9tf;2g cjperson pushes directly to the right on the box with a force of 60N. The coefficient of ;fyf:j+cz2 9j(*tya1w o vx ggkinetic friction between the box and the surface is $\mu_k$ = 0.20. The coefficient of static friction between the box and the surface is $\mu_s$ = 0.60. What is the magnitude of the force of friction acting on the box during the push?

  13.16: A block initially moving at 8 m/s accelera1;bgc oriwq6ah1 30zy vg:6 .mmcgnj1 tes uniformly to rest on a horizontal surface. The block travels a distance of 12.0 m during the slide. Which one of the following choices bes;q0oz3ygc:wg6v6i1hmn g a. j m1r cb1t represents the coefficient of kinetic friction between the surface and the block?

  00.21: A car of mass m slides across a pkrhie 13 ioxae pr.9us,*a8l5atch of ice at a speed v with its brakes locked. It then hits dry pavement and skids to a stop in a disi e*h8r.sr ,l9a 15exoik3a putanced. The coefficient of kinetic friction between the tires and the dry road is μ .
If the car had a mass of 2m, it would have skidded a distance of

  00.22: A car of mass m slides a.n9a pr ,nmqu)as4ir )cross a patch of ice at a speed v with its brakes locked. It then hits dry pavement and skids to a stop in a distanced. The coefficient of kinetic friction between the tires and the dry road is μ ,pmn qusin)ar).9ra4 .

If the car had a speed of 2v, it would have skidded a distance of

  04.32: he driver of a car makes an emergency stop by slamming on the kadc9)ba ,:7n,kfwc y car's brakes and skidding to a stop. How f k,9kn7:y d,ac fc)bwaar would the car have skidded if it had been traveling twice as fast?

  99.39: The driver of an automobile must carefully control each of the foi l6-.h zgqi,vllowing devicesi, hz6vi lgq.-. Which of these devices can cause an acceleration in a moving car?
(1) the break pedal ( 2) the gas pedal ( 3) the steering wheel

  00.25: The net force on a rocket with a wew/pn/fz6e/wln: jb (yight of 15000 newtons is 24000 newtons. About how much time is needed to increase the rocket ’ speed from 12 m/s to 36 m/s near the surface of the Eabn/zwje:n lf /w(p6y/ rth at takeoff?

  07.21: A box slides to the right acrobnb 7(ksdga2us u8fs rb8;r :3ss a horizontal floor. A person called Ted exerts a fob8uabf ;2r7bdks rnsus( :38grce T to the right on the box. A person called Mario exerts a force M to the left, which is half as large as the force T. Given that there is friction f and the box accelerates to the right, rank the sizes of these three forces exerted on the box.

  02.27: The diagram below shows three rollep30x3jqs7fgb b5d .b-e/ egd h jc9fc5r coaster tracks of equal length. Assume that on all tracks the roller coaster carts start from rest at the same elevation and moves frictionlessly over the tracks tocp5 7j3. /db c9ge3 fqdbh-f5esg0 xjb the finish.
If all roller coaster carts start at the positions shown, on which track would the roller coaster cart be traveling the fastest at the finish?

  02.28: The diagram below shows three roller coaster kaz:-t1xtb;sd *-p0)wzr l wi tracks of equal length. Assume that on all tracks the roller coaster carts start from rest at the same elevation and moves frictionlessly over the tracks to the fin) zt; * r -akwdisxzp-l1:b0twish.
If all roller coaster carts start at the positions shown, on which track would the roller coaster cart reach the finish first?

  02.29: Assume the rollercoaster cartrolls frictio zawt8ofcl6) +nlessly along the curved track from point A to point C under the influence of gravity. What would be the)wt6af c+8o lz direction of the cart's acceleration at point

  02.40: A box with a mass of 50 kg is dragged across the floor by an orhvcn fv0p70 j99do,njz0+ rope which makes an angle of 300 with the horizontal. Which o j0 or909nvpjd7n0o z,hc+fvnf the following would be closest to the coefficient of kinetic friction between the box and the floor if a 250 newton force on the rope is required to move the crate at a constant speed of 20 m/s as shown in the diagram?

  04.40: A 6.0 kg bloc 5lg0l, p*etel4 qgf;gk initially at rest is pushed against a wall by a 100 N force as shown. Thecoefficient of kinetic friction is 0.30 while the coefficient of static friction is 0.50. What is true;gpe4tfe, g5*ql0 lgl of the friction acting on the block after a time of 1 second?

  05.10: A homeowner pushes a lawn mower across a horizontal pb ;nsqa11qc -fatch of grass with a constant speed by applying a force P. The arrows in the diagram correcqs -; abfq1n1ctly indicate the directions but not necessarily the magnitudes of the various forces on the lawn mower. Which of the following relations among the various force magnitudes, W, f, N, P is CORRECT?

  06.14: A book leans against t gki1f3e9a;y a crate on a table. Neither is moving. Which of the following statements concerning this situation is CORRECT? ayk;fi gt913e

  06.15: A crate of toysm g4wt4yovosm.j 4:asi/a9b 2 remains at rest on a sleigh as the sleigh is pulled up a hill with:o2swy4 4 ov. g/ mstamjba4i9 an increasing speed. The crate is not fastened down to the sleigh. What force is responsible for the crate’s increase in speedup the hill?